<template>
  <el-container class="home_container">
      <!-- 头部 -->
  <el-header>
    <div>
        <img src="../assets/heima.png">
        <span>电商后台管理系统</span>
    </div>
    <el-button type="info" @click="logout">退出</el-button>
  </el-header>
  <!-- 主体 -->
  <el-container>
      <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
    <!-- 侧边栏菜单区 -->
    <el-menu
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409eff"
      :unique-opened="true"
      :collapse='isCollapse'
      :collapse-transition="false"
      router :default-active="activePath">
      <!-- 一级菜单,i是图标，template是模板，span是文本 -->
      <el-submenu :index="item.id + ''" v-for="item in menuList" :key='item.id'>
        <template slot="title">
          <i :class="iconsObj[item.id]"></i>
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
        <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" 
        :key='subItem.id' @click="saveNavState('/'+subItem.path)">
        <template slot="title">
          <i class="el-icon-menu"></i>
          <span>{{subItem.authName}}</span>
        </template>
        </el-menu-item>
      </el-submenu>
    </el-menu>
  </el-aside>
    <el-main>
        <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>

<script>
export default {
    name:'Home',
    data() {
        return {
            menuList:[],
            iconsObj:{
                '125':'iconfont icon-users',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            isCollapse:false,
            activePath:''
        }
    },
    created(){
        this.getMenuList(),
        this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods: {
        //退出功能
        logout(){
            window.sessionStorage.clear()
            this.$router.push('/login')
        },
        //获取菜单
        async getMenuList(){
           const {data:res} = await this.$http.get('menus')
           if(res.meta,status === 200) return this.$message.error(res.meta.msg)
           this.menuList=res.data
           
        },
        //点击按钮折叠菜单
        toggleCollapse(){
            this.isCollapse=!this.isCollapse
        },
        //保存连接激活状态
        saveNavState(activePath){
            window.sessionStorage.setItem('active',activePath)
            this.activePath=activePath
        }
    },    
}
</script>

<style lang='less' scoped>
.home_container{
    height: 100%;
}

.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #ffff;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
    }
}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right: 0;
    }
}
.el-main{
    background-color: #eaedf1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4a5064;
    color: white;
    font-size: 10px;
    line-height: 24px;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>